./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 28669211a2ef49b5efd7443ec92409c5f49218a96d1252c934deb7757bde86cd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:11:24,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:11:24,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:11:24,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:11:24,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:11:24,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:11:24,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:11:24,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:11:24,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:11:24,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:11:24,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:11:24,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:11:24,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:11:24,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:11:24,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:11:24,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:11:24,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:11:24,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:11:24,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:11:24,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:11:24,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:11:24,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:11:24,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:11:24,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:11:24,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:11:24,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:11:24,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:11:24,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:11:24,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:11:24,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:11:24,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:11:24,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:11:24,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:11:24,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:11:24,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:11:24,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:11:24,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:11:24,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:11:24,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:11:24,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:11:24,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:11:24,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:11:24,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:11:24,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:11:24,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:11:24,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:11:24,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:11:24,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:11:24,685 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:11:24,685 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:11:24,685 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:11:24,685 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:11:24,686 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:11:24,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:11:24,687 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:11:24,687 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:11:24,687 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:11:24,687 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:11:24,688 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:11:24,688 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:11:24,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:11:24,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:11:24,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:11:24,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:11:24,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:11:24,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:11:24,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:11:24,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:11:24,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:11:24,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:11:24,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:11:24,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:11:24,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:11:24,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:11:24,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:11:24,692 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:11:24,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:11:24,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:11:24,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:11:24,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:11:24,693 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28669211a2ef49b5efd7443ec92409c5f49218a96d1252c934deb7757bde86cd [2021-11-25 20:11:24,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:11:24,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:11:24,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:11:24,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:11:25,000 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:11:25,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-25 20:11:25,094 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/data/1b298684b/9c6af8e097424e0e8135e7764aeee0d8/FLAG41a1a4fee [2021-11-25 20:11:26,092 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:11:26,094 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-25 20:11:26,163 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/data/1b298684b/9c6af8e097424e0e8135e7764aeee0d8/FLAG41a1a4fee [2021-11-25 20:11:26,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/data/1b298684b/9c6af8e097424e0e8135e7764aeee0d8 [2021-11-25 20:11:26,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:11:26,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:11:26,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:11:26,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:11:26,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:11:26,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:11:26" (1/1) ... [2021-11-25 20:11:26,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5f9040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:26, skipping insertion in model container [2021-11-25 20:11:26,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:11:26" (1/1) ... [2021-11-25 20:11:26,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:11:26,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:11:30,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387086,387099] [2021-11-25 20:11:30,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387231,387244] [2021-11-25 20:11:30,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:11:30,380 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:11:30,855 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387086,387099] [2021-11-25 20:11:30,855 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i[387231,387244] [2021-11-25 20:11:30,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:11:31,185 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:11:31,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31 WrapperNode [2021-11-25 20:11:31,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:11:31,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:11:31,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:11:31,186 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:11:31,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31" (1/1) ... [2021-11-25 20:11:31,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31" (1/1) ... [2021-11-25 20:11:31,557 INFO L137 Inliner]: procedures = 510, calls = 2610, calls flagged for inlining = 246, calls inlined = 216, statements flattened = 5468 [2021-11-25 20:11:31,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:11:31,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:11:31,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:11:31,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:11:31,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31" (1/1) ... [2021-11-25 20:11:31,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31" (1/1) ... [2021-11-25 20:11:31,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31" (1/1) ... [2021-11-25 20:11:31,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31" (1/1) ... [2021-11-25 20:11:31,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31" (1/1) ... [2021-11-25 20:11:31,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31" (1/1) ... [2021-11-25 20:11:31,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31" (1/1) ... [2021-11-25 20:11:31,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:11:31,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:11:31,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:11:31,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:11:31,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31" (1/1) ... [2021-11-25 20:11:31,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:11:31,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:11:31,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:11:31,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:11:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure drain_rx [2021-11-25 20:11:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_rx [2021-11-25 20:11:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-25 20:11:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-25 20:11:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-25 20:11:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure miiport_write [2021-11-25 20:11:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure miiport_write [2021-11-25 20:11:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 20:11:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 20:11:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:11:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:11:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 20:11:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 20:11:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_tx_done [2021-11-25 20:11:31,926 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_tx_done [2021-11-25 20:11:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_84 [2021-11-25 20:11:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_84 [2021-11-25 20:11:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 20:11:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 20:11:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:11:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:11:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure reinit_rx [2021-11-25 20:11:31,927 INFO L138 BoogieDeclarations]: Found implementation of procedure reinit_rx [2021-11-25 20:11:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_92 [2021-11-25 20:11:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_92 [2021-11-25 20:11:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 20:11:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 20:11:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure reinit_ring [2021-11-25 20:11:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure reinit_ring [2021-11-25 20:11:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 20:11:31,928 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 20:11:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:11:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:11:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 20:11:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 20:11:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 20:11:31,929 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 20:11:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 20:11:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 20:11:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 20:11:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 20:11:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:11:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:11:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 20:11:31,930 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 20:11:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 20:11:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 20:11:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:11:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:11:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure __set_rx_mode [2021-11-25 20:11:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_rx_mode [2021-11-25 20:11:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 20:11:31,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 20:11:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 20:11:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 20:11:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:11:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 20:11:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 20:11:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-25 20:11:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-25 20:11:31,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_108 [2021-11-25 20:11:31,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_108 [2021-11-25 20:11:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-25 20:11:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-25 20:11:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_read [2021-11-25 20:11:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_read [2021-11-25 20:11:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:11:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:11:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_stop_rxtx [2021-11-25 20:11:31,933 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_stop_rxtx [2021-11-25 20:11:31,933 INFO L130 BoogieDeclarations]: Found specification of procedure ns_tx_timeout [2021-11-25 20:11:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_tx_timeout [2021-11-25 20:11:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:11:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:11:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:11:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 20:11:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 20:11:31,934 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_reset [2021-11-25 20:11:31,934 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_reset [2021-11-25 20:11:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:11:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:11:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:11:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:11:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-25 20:11:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-25 20:11:31,935 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:11:31,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:11:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-25 20:11:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-25 20:11:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure move_int_phy [2021-11-25 20:11:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure move_int_phy [2021-11-25 20:11:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:11:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:11:31,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 20:11:31,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 20:11:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:11:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:11:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:11:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:11:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 20:11:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 20:11:31,989 INFO L130 BoogieDeclarations]: Found specification of procedure enable_wol_mode [2021-11-25 20:11:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_wol_mode [2021-11-25 20:11:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_resume [2021-11-25 20:11:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_resume [2021-11-25 20:11:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-25 20:11:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-25 20:11:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:11:31,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 20:11:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 20:11:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 20:11:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 20:11:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 20:11:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 20:11:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:11:31,991 INFO L130 BoogieDeclarations]: Found specification of procedure mii_getbit [2021-11-25 20:11:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_getbit [2021-11-25 20:11:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:11:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:11:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:11:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:11:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:11:31,992 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:11:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:11:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-25 20:11:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-25 20:11:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-25 20:11:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-25 20:11:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 20:11:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 20:11:31,993 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_poll_controller [2021-11-25 20:11:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_poll_controller [2021-11-25 20:11:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 20:11:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 20:11:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure check_link [2021-11-25 20:11:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure check_link [2021-11-25 20:11:31,994 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-25 20:11:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-25 20:11:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:11:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:11:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 20:11:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 20:11:31,995 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 20:11:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 20:11:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 20:11:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 20:11:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure init_phy_fixup [2021-11-25 20:11:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure init_phy_fixup [2021-11-25 20:11:31,996 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-25 20:11:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-25 20:11:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-25 20:11:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-25 20:11:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure mii_nway_result [2021-11-25 20:11:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_nway_result [2021-11-25 20:11:31,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:11:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:11:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:11:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:11:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:11:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:11:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure switch_port_external [2021-11-25 20:11:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_port_external [2021-11-25 20:11:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2021-11-25 20:11:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2021-11-25 20:11:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 20:11:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 20:11:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure get_eeprom_len [2021-11-25 20:11:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure get_eeprom_len [2021-11-25 20:11:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-25 20:11:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-25 20:11:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-11-25 20:11:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-11-25 20:11:32,000 INFO L130 BoogieDeclarations]: Found specification of procedure get_regs_len [2021-11-25 20:11:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure get_regs_len [2021-11-25 20:11:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 20:11:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 20:11:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure nway_reset [2021-11-25 20:11:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure nway_reset [2021-11-25 20:11:32,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-25 20:11:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2021-11-25 20:11:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_91 [2021-11-25 20:11:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_91 [2021-11-25 20:11:32,002 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 20:11:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 20:11:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-25 20:11:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-25 20:11:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure init_registers [2021-11-25 20:11:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure init_registers [2021-11-25 20:11:32,003 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 20:11:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 20:11:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 20:11:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 20:11:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2021-11-25 20:11:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2021-11-25 20:11:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:11:32,005 INFO L130 BoogieDeclarations]: Found specification of procedure switch_port_internal [2021-11-25 20:11:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_port_internal [2021-11-25 20:11:32,005 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 20:11:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 20:11:32,005 INFO L130 BoogieDeclarations]: Found specification of procedure dump_ring [2021-11-25 20:11:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_ring [2021-11-25 20:11:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:11:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:11:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure intr_handler [2021-11-25 20:11:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_handler [2021-11-25 20:11:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:11:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:11:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-25 20:11:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2021-11-25 20:11:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:11:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:11:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 20:11:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 20:11:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure __get_stats [2021-11-25 20:11:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_stats [2021-11-25 20:11:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure set_bufsize [2021-11-25 20:11:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bufsize [2021-11-25 20:11:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-25 20:11:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-25 20:11:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2021-11-25 20:11:32,009 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2021-11-25 20:11:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure drain_ring [2021-11-25 20:11:32,009 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_ring [2021-11-25 20:11:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 20:11:32,010 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 20:11:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 20:11:32,010 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 20:11:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 20:11:32,010 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 20:11:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 20:11:32,011 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 20:11:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_remove1 [2021-11-25 20:11:32,011 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_remove1 [2021-11-25 20:11:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_natsemi_exit_mod_15_2 [2021-11-25 20:11:32,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_natsemi_exit_mod_15_2 [2021-11-25 20:11:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:11:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure init_ring [2021-11-25 20:11:32,012 INFO L138 BoogieDeclarations]: Found implementation of procedure init_ring [2021-11-25 20:11:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:11:32,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:11:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_irq_disable [2021-11-25 20:11:32,012 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_irq_disable [2021-11-25 20:11:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-11-25 20:11:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-11-25 20:11:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 20:11:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 20:11:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 20:11:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 20:11:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-25 20:11:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-25 20:11:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioaddr [2021-11-25 20:11:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioaddr [2021-11-25 20:11:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure mii_send_bits [2021-11-25 20:11:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_send_bits [2021-11-25 20:11:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure refill_rx [2021-11-25 20:11:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_rx [2021-11-25 20:11:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:11:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:11:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2021-11-25 20:11:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2021-11-25 20:11:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-25 20:11:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-25 20:11:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure drain_tx [2021-11-25 20:11:32,016 INFO L138 BoogieDeclarations]: Found implementation of procedure drain_tx [2021-11-25 20:11:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure natsemi_irq_enable [2021-11-25 20:11:32,017 INFO L138 BoogieDeclarations]: Found implementation of procedure natsemi_irq_enable [2021-11-25 20:11:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 20:11:32,017 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 20:11:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:11:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure miiport_read [2021-11-25 20:11:32,017 INFO L138 BoogieDeclarations]: Found implementation of procedure miiport_read [2021-11-25 20:11:32,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:11:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:11:32,018 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 20:11:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 20:11:32,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_107 [2021-11-25 20:11:32,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_107 [2021-11-25 20:11:33,016 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:11:33,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:11:33,658 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:11:37,002 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:11:37,153 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:11:38,883 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:11:38,883 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:11:38,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:11:38 BoogieIcfgContainer [2021-11-25 20:11:38,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:11:38,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:11:38,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:11:38,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:11:38,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:11:26" (1/3) ... [2021-11-25 20:11:38,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f18966d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:11:38, skipping insertion in model container [2021-11-25 20:11:38,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:11:31" (2/3) ... [2021-11-25 20:11:38,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f18966d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:11:38, skipping insertion in model container [2021-11-25 20:11:38,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:11:38" (3/3) ... [2021-11-25 20:11:38,897 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-natsemi-natsemi.cil.i [2021-11-25 20:11:38,902 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:11:38,903 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:11:38,960 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:11:38,967 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:11:38,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:11:39,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 1933 states, 1051 states have (on average 1.2626070409134158) internal successors, (1327), 1086 states have internal predecessors, (1327), 752 states have call successors, (752), 130 states have call predecessors, (752), 129 states have return successors, (746), 737 states have call predecessors, (746), 746 states have call successors, (746) [2021-11-25 20:11:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-25 20:11:39,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:39,067 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:11:39,067 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:11:39,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash -307770063, now seen corresponding path program 1 times [2021-11-25 20:11:39,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:11:39,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132280091] [2021-11-25 20:11:39,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:39,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:11:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2021-11-25 20:11:39,932 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:11:39,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132280091] [2021-11-25 20:11:39,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132280091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:39,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:39,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:11:39,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444645599] [2021-11-25 20:11:39,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:39,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:11:39,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:11:39,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:11:39,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:39,978 INFO L87 Difference]: Start difference. First operand has 1933 states, 1051 states have (on average 1.2626070409134158) internal successors, (1327), 1086 states have internal predecessors, (1327), 752 states have call successors, (752), 130 states have call predecessors, (752), 129 states have return successors, (746), 737 states have call predecessors, (746), 746 states have call successors, (746) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 20:11:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:42,505 INFO L93 Difference]: Finished difference Result 5324 states and 7787 transitions. [2021-11-25 20:11:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:11:42,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 194 [2021-11-25 20:11:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:42,563 INFO L225 Difference]: With dead ends: 5324 [2021-11-25 20:11:42,564 INFO L226 Difference]: Without dead ends: 3360 [2021-11-25 20:11:42,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:42,586 INFO L933 BasicCegarLoop]: 3089 mSDtfsCounter, 2158 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 5530 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:42,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2158 Valid, 5530 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 20:11:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2021-11-25 20:11:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3356. [2021-11-25 20:11:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3356 states, 1824 states have (on average 1.2450657894736843) internal successors, (2271), 1888 states have internal predecessors, (2271), 1289 states have call successors, (1289), 244 states have call predecessors, (1289), 242 states have return successors, (1290), 1267 states have call predecessors, (1290), 1289 states have call successors, (1290) [2021-11-25 20:11:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4850 transitions. [2021-11-25 20:11:43,001 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4850 transitions. Word has length 194 [2021-11-25 20:11:43,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:43,003 INFO L470 AbstractCegarLoop]: Abstraction has 3356 states and 4850 transitions. [2021-11-25 20:11:43,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 20:11:43,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4850 transitions. [2021-11-25 20:11:43,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-25 20:11:43,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:43,015 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:11:43,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:11:43,016 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:11:43,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:43,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1032850254, now seen corresponding path program 1 times [2021-11-25 20:11:43,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:11:43,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620671583] [2021-11-25 20:11:43,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:43,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:11:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2021-11-25 20:11:43,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:11:43,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620671583] [2021-11-25 20:11:43,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620671583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:43,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:43,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:11:43,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62033072] [2021-11-25 20:11:43,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:43,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:11:43,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:11:43,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:11:43,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:43,432 INFO L87 Difference]: Start difference. First operand 3356 states and 4850 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 20:11:47,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:47,128 INFO L93 Difference]: Finished difference Result 9662 states and 13925 transitions. [2021-11-25 20:11:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:11:47,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 253 [2021-11-25 20:11:47,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:47,187 INFO L225 Difference]: With dead ends: 9662 [2021-11-25 20:11:47,193 INFO L226 Difference]: Without dead ends: 6337 [2021-11-25 20:11:47,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:47,217 INFO L933 BasicCegarLoop]: 3071 mSDtfsCounter, 2614 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 5356 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:47,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2614 Valid, 5356 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 20:11:47,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2021-11-25 20:11:47,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 6331. [2021-11-25 20:11:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6331 states, 3483 states have (on average 1.248636233132357) internal successors, (4349), 3601 states have internal predecessors, (4349), 2378 states have call successors, (2378), 479 states have call predecessors, (2378), 469 states have return successors, (2387), 2326 states have call predecessors, (2387), 2378 states have call successors, (2387) [2021-11-25 20:11:47,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 9114 transitions. [2021-11-25 20:11:47,623 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 9114 transitions. Word has length 253 [2021-11-25 20:11:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:47,626 INFO L470 AbstractCegarLoop]: Abstraction has 6331 states and 9114 transitions. [2021-11-25 20:11:47,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 20:11:47,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 9114 transitions. [2021-11-25 20:11:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-25 20:11:47,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:47,639 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 9, 6, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:11:47,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:11:47,639 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:11:47,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1485288081, now seen corresponding path program 1 times [2021-11-25 20:11:47,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:11:47,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947922914] [2021-11-25 20:11:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:47,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:11:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2021-11-25 20:11:47,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:11:47,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947922914] [2021-11-25 20:11:47,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947922914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:47,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:47,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:11:47,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863528497] [2021-11-25 20:11:47,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:47,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:11:47,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:11:47,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:11:47,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:47,958 INFO L87 Difference]: Start difference. First operand 6331 states and 9114 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 20:11:51,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:51,501 INFO L93 Difference]: Finished difference Result 16138 states and 23193 transitions. [2021-11-25 20:11:51,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:11:51,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 313 [2021-11-25 20:11:51,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:51,586 INFO L225 Difference]: With dead ends: 16138 [2021-11-25 20:11:51,586 INFO L226 Difference]: Without dead ends: 9838 [2021-11-25 20:11:51,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:51,636 INFO L933 BasicCegarLoop]: 3872 mSDtfsCounter, 1910 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1910 SdHoareTripleChecker+Valid, 6274 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:51,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1910 Valid, 6274 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 20:11:51,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9838 states. [2021-11-25 20:11:52,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9838 to 9832. [2021-11-25 20:11:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9832 states, 5480 states have (on average 1.2490875912408759) internal successors, (6845), 5647 states have internal predecessors, (6845), 3603 states have call successors, (3603), 758 states have call predecessors, (3603), 748 states have return successors, (3612), 3539 states have call predecessors, (3612), 3603 states have call successors, (3612) [2021-11-25 20:11:52,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9832 states to 9832 states and 14060 transitions. [2021-11-25 20:11:52,314 INFO L78 Accepts]: Start accepts. Automaton has 9832 states and 14060 transitions. Word has length 313 [2021-11-25 20:11:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:52,315 INFO L470 AbstractCegarLoop]: Abstraction has 9832 states and 14060 transitions. [2021-11-25 20:11:52,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 20:11:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 9832 states and 14060 transitions. [2021-11-25 20:11:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-11-25 20:11:52,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:52,329 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 9, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:11:52,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:11:52,329 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:11:52,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:52,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1242738919, now seen corresponding path program 1 times [2021-11-25 20:11:52,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:11:52,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041054105] [2021-11-25 20:11:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:52,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:11:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1120 trivial. 0 not checked. [2021-11-25 20:11:52,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:11:52,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041054105] [2021-11-25 20:11:52,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041054105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:52,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:52,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:11:52,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991717876] [2021-11-25 20:11:52,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:52,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:11:52,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:11:52,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:11:52,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:52,737 INFO L87 Difference]: Start difference. First operand 9832 states and 14060 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 20:11:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:11:56,982 INFO L93 Difference]: Finished difference Result 23136 states and 33081 transitions. [2021-11-25 20:11:56,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:11:56,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 360 [2021-11-25 20:11:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:11:57,096 INFO L225 Difference]: With dead ends: 23136 [2021-11-25 20:11:57,097 INFO L226 Difference]: Without dead ends: 13335 [2021-11-25 20:11:57,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:57,146 INFO L933 BasicCegarLoop]: 4102 mSDtfsCounter, 1911 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 6496 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:11:57,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1911 Valid, 6496 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 20:11:57,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13335 states. [2021-11-25 20:11:58,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13335 to 13329. [2021-11-25 20:11:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13329 states, 7473 states have (on average 1.2494312859627994) internal successors, (9337), 7689 states have internal predecessors, (9337), 4828 states have call successors, (4828), 1037 states have call predecessors, (4828), 1027 states have return successors, (4837), 4752 states have call predecessors, (4837), 4828 states have call successors, (4837) [2021-11-25 20:11:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13329 states to 13329 states and 19002 transitions. [2021-11-25 20:11:58,140 INFO L78 Accepts]: Start accepts. Automaton has 13329 states and 19002 transitions. Word has length 360 [2021-11-25 20:11:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:11:58,142 INFO L470 AbstractCegarLoop]: Abstraction has 13329 states and 19002 transitions. [2021-11-25 20:11:58,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 20:11:58,143 INFO L276 IsEmpty]: Start isEmpty. Operand 13329 states and 19002 transitions. [2021-11-25 20:11:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-11-25 20:11:58,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:11:58,162 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 9, 9, 9, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:11:58,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:11:58,163 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:11:58,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:11:58,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1031051200, now seen corresponding path program 1 times [2021-11-25 20:11:58,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:11:58,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026645915] [2021-11-25 20:11:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:11:58,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:11:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:11:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2021-11-25 20:11:58,515 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:11:58,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026645915] [2021-11-25 20:11:58,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026645915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:11:58,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:11:58,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:11:58,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264443758] [2021-11-25 20:11:58,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:11:58,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:11:58,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:11:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:11:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:11:58,520 INFO L87 Difference]: Start difference. First operand 13329 states and 19002 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-25 20:12:02,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:12:03,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:12:03,358 INFO L93 Difference]: Finished difference Result 26891 states and 38444 transitions. [2021-11-25 20:12:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:12:03,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 422 [2021-11-25 20:12:03,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:12:03,436 INFO L225 Difference]: With dead ends: 26891 [2021-11-25 20:12:03,436 INFO L226 Difference]: Without dead ends: 13593 [2021-11-25 20:12:03,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:12:03,497 INFO L933 BasicCegarLoop]: 2441 mSDtfsCounter, 13 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4858 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:12:03,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 4858 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-25 20:12:03,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13593 states. [2021-11-25 20:12:04,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13593 to 13369. [2021-11-25 20:12:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13369 states, 7513 states have (on average 1.2481032876347664) internal successors, (9377), 7729 states have internal predecessors, (9377), 4828 states have call successors, (4828), 1037 states have call predecessors, (4828), 1027 states have return successors, (4837), 4752 states have call predecessors, (4837), 4828 states have call successors, (4837) [2021-11-25 20:12:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13369 states to 13369 states and 19042 transitions. [2021-11-25 20:12:04,528 INFO L78 Accepts]: Start accepts. Automaton has 13369 states and 19042 transitions. Word has length 422 [2021-11-25 20:12:04,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:12:04,529 INFO L470 AbstractCegarLoop]: Abstraction has 13369 states and 19042 transitions. [2021-11-25 20:12:04,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-25 20:12:04,530 INFO L276 IsEmpty]: Start isEmpty. Operand 13369 states and 19042 transitions. [2021-11-25 20:12:04,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-11-25 20:12:04,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:12:04,547 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 9, 9, 8, 7, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:12:04,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:12:04,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:12:04,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:12:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2147469820, now seen corresponding path program 1 times [2021-11-25 20:12:04,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:12:04,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276731187] [2021-11-25 20:12:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:04,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:12:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2021-11-25 20:12:04,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:12:04,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276731187] [2021-11-25 20:12:04,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276731187] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:12:04,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348123200] [2021-11-25 20:12:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:04,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:12:04,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:12:04,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:12:04,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:12:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:06,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 4271 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:12:06,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1312 trivial. 0 not checked. [2021-11-25 20:12:07,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:12:07,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348123200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:12:07,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:12:07,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:12:07,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113602871] [2021-11-25 20:12:07,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:12:07,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:12:07,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:12:07,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:12:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:12:07,115 INFO L87 Difference]: Start difference. First operand 13369 states and 19042 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2021-11-25 20:12:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:12:09,523 INFO L93 Difference]: Finished difference Result 26715 states and 38082 transitions. [2021-11-25 20:12:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:12:09,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 464 [2021-11-25 20:12:09,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:12:09,608 INFO L225 Difference]: With dead ends: 26715 [2021-11-25 20:12:09,608 INFO L226 Difference]: Without dead ends: 13377 [2021-11-25 20:12:09,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:12:09,664 INFO L933 BasicCegarLoop]: 2436 mSDtfsCounter, 0 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4867 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:12:09,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4867 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 20:12:09,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13377 states. [2021-11-25 20:12:10,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13377 to 13377. [2021-11-25 20:12:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13377 states, 7521 states have (on average 1.2478393830607633) internal successors, (9385), 7737 states have internal predecessors, (9385), 4828 states have call successors, (4828), 1037 states have call predecessors, (4828), 1027 states have return successors, (4837), 4752 states have call predecessors, (4837), 4828 states have call successors, (4837) [2021-11-25 20:12:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13377 states to 13377 states and 19050 transitions. [2021-11-25 20:12:10,555 INFO L78 Accepts]: Start accepts. Automaton has 13377 states and 19050 transitions. Word has length 464 [2021-11-25 20:12:10,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:12:10,558 INFO L470 AbstractCegarLoop]: Abstraction has 13377 states and 19050 transitions. [2021-11-25 20:12:10,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2021-11-25 20:12:10,558 INFO L276 IsEmpty]: Start isEmpty. Operand 13377 states and 19050 transitions. [2021-11-25 20:12:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-25 20:12:10,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:12:10,576 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 9, 9, 9, 8, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:12:10,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 20:12:10,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 20:12:10,790 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:12:10,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:12:10,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1868297841, now seen corresponding path program 1 times [2021-11-25 20:12:10,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:12:10,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518321987] [2021-11-25 20:12:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:10,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:12:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1363 trivial. 0 not checked. [2021-11-25 20:12:11,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:12:11,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518321987] [2021-11-25 20:12:11,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518321987] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:12:11,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396821717] [2021-11-25 20:12:11,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:11,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:12:11,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:12:11,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:12:11,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:12:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:12,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 4264 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:12:12,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2021-11-25 20:12:13,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:12:13,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396821717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:12:13,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:12:13,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:12:13,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725078918] [2021-11-25 20:12:13,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:12:13,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:12:13,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:12:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:12:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:12:13,413 INFO L87 Difference]: Start difference. First operand 13377 states and 19050 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-25 20:12:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:12:16,336 INFO L93 Difference]: Finished difference Result 26793 states and 38235 transitions. [2021-11-25 20:12:16,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:12:16,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) Word has length 461 [2021-11-25 20:12:16,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:12:16,408 INFO L225 Difference]: With dead ends: 26793 [2021-11-25 20:12:16,408 INFO L226 Difference]: Without dead ends: 13447 [2021-11-25 20:12:16,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:12:16,463 INFO L933 BasicCegarLoop]: 2437 mSDtfsCounter, 5 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:12:16,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4869 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-25 20:12:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13447 states. [2021-11-25 20:12:17,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13447 to 13387. [2021-11-25 20:12:17,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13387 states, 7531 states have (on average 1.2475102907980349) internal successors, (9395), 7747 states have internal predecessors, (9395), 4828 states have call successors, (4828), 1037 states have call predecessors, (4828), 1027 states have return successors, (4837), 4752 states have call predecessors, (4837), 4828 states have call successors, (4837) [2021-11-25 20:12:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13387 states to 13387 states and 19060 transitions. [2021-11-25 20:12:17,385 INFO L78 Accepts]: Start accepts. Automaton has 13387 states and 19060 transitions. Word has length 461 [2021-11-25 20:12:17,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:12:17,386 INFO L470 AbstractCegarLoop]: Abstraction has 13387 states and 19060 transitions. [2021-11-25 20:12:17,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (68), 2 states have call predecessors, (68), 2 states have call successors, (68) [2021-11-25 20:12:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 13387 states and 19060 transitions. [2021-11-25 20:12:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-11-25 20:12:17,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:12:17,405 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 9, 9, 8, 7, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:12:17,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:12:17,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:12:17,631 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:12:17,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:12:17,631 INFO L85 PathProgramCache]: Analyzing trace with hash -9295882, now seen corresponding path program 1 times [2021-11-25 20:12:17,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:12:17,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974255] [2021-11-25 20:12:17,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:17,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:12:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2021-11-25 20:12:17,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:12:17,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974255] [2021-11-25 20:12:17,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974255] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:12:17,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189250497] [2021-11-25 20:12:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:17,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:12:17,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:12:17,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:12:17,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3356b2ab-41fa-4a64-b4d2-57a95108d0be/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:12:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:19,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 4397 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:12:19,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:12:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2021-11-25 20:12:20,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:12:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2021-11-25 20:12:21,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189250497] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:12:21,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2003941088] [2021-11-25 20:12:21,519 INFO L159 IcfgInterpreter]: Started Sifa with 244 locations of interest [2021-11-25 20:12:21,519 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:12:21,526 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:12:21,531 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:12:21,532 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs